1. If you buy something from them at a fair price they'll wait a while and claim theft (see above).
2. Even if you do everything in your power to preserve their lives they'll later claim you killed a bunch of imaginary ones or murdered those you failed to save (see holocaust).
3. If you bend over backwards to help them set up their own affairs they'll have you hanged for imaginary crimes (see Eichmann).

So we know that there is no point in helping them in any way, trying to preserve their lives, or paying them for stuff you want of theirs.

We should still apply basic protection laws to them though, because people who abuse Jews are likely to move on to human victims at a later date.

In addition it is common knowledge here that:
1) The only good jew, is a dead jew. (Some say Christ was jewish, and died some 2000 years ago)
2) You cant trust a jew to tell you good morning at the beginning of the day without looking out a window, then checking for your wallet.
3) They are as dangerous as, and should be treated as, smallpox...trouble is, that violates their one true enemies code of ethics...unless you happen to be lukewarm in your Christianity...I would lose those jewels in my crown for the sake of future generations!